CVE-2026-114131CWE-436CWE-863broken-access-control

CVE-2026-114131

Medium · published October 21, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

Nuxt is an open-source web development framework for Vue.js. From 3.11.0 until 3.21.4 and 4.4.4, Nuxt compares route-rule keys with the raw request path while route resolution decodes dynamic and catch-all parameters, allowing a percent-encoded segment to resolve to a protected page without matching the routeRules entry intended for that path. As a result, appMiddleware can be skipped during server rendering and an unauthenticated requester can receive the gated page and its SSR data. The same mismatch affects app-manifest rules including redirect, appLayout, ssr, prerender, and payload flags derived from cache, isr, and swr. This vulnerability is fixed in 4.4.4 and 3.21.4.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00289 · 20.4th percentile
Weaknesses
CWE-436 · Interpretation Conflict; CWE-863 · Incorrect Authorization
Published
2026-10-21T22:17Z
References (5)
https://github.com/nuxt/nuxt/commit/81f86ac5ee82bb1a9b887e59f3bc84624d711497 · [email protected]https://github.com/nuxt/nuxt/commit/9123ed850c468a7424a868c20d0d49a5507d32e5 · [email protected]https://github.com/nuxt/nuxt/releases/tag/v3.21.11 · [email protected]https://github.com/nuxt/nuxt/releases/tag/v4.5.2 · [email protected]https://github.com/nuxt/nuxt/security/advisories/GHSA-6gq8-jgmh-3ffp · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 21 OCT 17:41Z
    Nuxt: Route rules are matched against the raw request path, so a percent-encoded segment can bypass `appMiddleware` on dynamic and catch-all routes
    cvelistv5
  • 21 OCT 17:41Z
    Nuxt: Route rules are matched against the raw request path, so a percent-encoded segment can bypass `appMiddleware` on dynamic and catch-all routes
    cvelistv5